1 what . sis The heart pumps blood into the aorta, which has an inner radius of 10 cm - The aorte to ed 32 major arteries is blood no the conte fravels aorta at a speed of pecms at approximately whed average speed does it 28 /, , travel in the arterios? Assume that blood can be treated as an ideal puid and that the arteries each have an ioner radius of 0-21 cm (smks)

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

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100 pounds is 100 pounds no matter the object or item being weighed